Pictures of the day: 18 March 2013

A baby elephant wallows in the mud, but then found himself unable to stand up again. Heavy rain in the Masai Mara created the perfect mud hole, and the youngster wasted no time in going for a roll. However, when he tried to get to his feet again, he was simply unable to stand and kept slipping over. The moment was captured on camera by professional wildlife photographer Andy Rouse, who had been following the herd.Picture: Andy Rouse / Rex Features